First Alert SMI105-AC Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup | 1-Pack

Meet the First Alert SMI105-AC Interconnect Hardwire Smoke Alarm, a compact device designed to help you detect smoke sooner and stay informed during power outages. Built with First Alert's Precision Detection technology, it aims to balance quick alerts with minimizing false alarms, so you can act confidently when danger or cooking fumes are present.

How it helps you day to day

The SMI105-AC supports interconnection with compatible alarms across your home. When one unit senses smoke or a hazard, the signal travels through the network, waking up other connected alarms to provide a coordinated warning. This can yield an early alert in multiple rooms, even if you’re not near the original detector.

• Precision Detection advanced sensing complies with current industry standards to reduce unnecessary nuisance alarms while enabling early warning in a home fire emergency.
• 10-Year battery backup provides continuous protection during power outages, ensuring the system remains active even when the lights go out.
• Interconnect capability means when one alarm sounds, all compatible alarms in the network sound as well, creating a clearer notification across the home.
• Visual alarm indicator helps you quickly identify the unit that initiated the alarm, simplifying monitoring in larger homes.
• End-of-life warning lets you know when it is time to replace the unit, preserving reliable protection over time.

Real-life scenarios and installation tips

Install the SMI105-AC in key living areas, hallways, kitchens, and sleeping zones to balance protection with everyday comfort. The 10-year battery backup is especially valuable during extended outages, while the interconnect feature supports a unified warning system in multi-story homes or larger layouts.

• Use in a multi-room layout to maximize early warning across bedrooms, hallways, and living spaces.
• Pair alongside other First Alert detectors for cohesive, whole-home coverage without needing frequent battery changes.

Designed for straightforward installation within standard wiring and existing First Alert ecosystems, the SMI105-AC suits both renovations and new builds. The 10-year backup reduces maintenance needs, while the audible and visual indicators provide clear status information during inspections or alarms.

Overall, the First Alert SMI105-AC offers a practical balance of reliable sensing, durable power, and networked alerts. It aligns with evolving safety standards and delivers actionable information when smoke is detected, without promising specific outcomes. Consider it as part of a flexible safety plan that fits your home and lifestyle.